RFC: Performance Monitor Counters device

[Segher Boessenkool]

Anton Blanchard wrote:
> It would be great if we could plug into something like oprofile.
> Linus was even interested in merging some sort of simple profiling
> infrastructure.
>
> We have a similar issue on ppc64, if we could share at least part
> of it between ppc32 and ppc64 that would be nice.

Some parts of the interface, like the raw/cooked counter reading and
the simplest forms of profiling interrupts, can probably be shared
across all architectures; ppc32 and ppc64 can probably share about
everything.


Segher


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